Benjamin schardt and william lutzenberger



-(No Model.

B. SGHARDT & W. LUTZENBERGER. ELECTRIC LIGHT SUPPORT.

No. 416,862. Patented- Dec. 10, 1889.

I UNITED STATES PATENT OFFICE.

BENJAMIN SCHARDT AND WVILLIAM LUTZENBERGER, OF DAYTON, OHIO,

- ASSIGNORS OE ONE-THIRD TOHERMANN PRETZINGER, OF SAME PLACE.

ELECTRIC-LIGHT SUPPORT.

SPECIFICATION forming'part of Letters Patent No. 416,862, dated December10, 1889.

Application filed May 2, 1889. Serial No. 309,410. (No model.)

To all whom it may concern:

Be it known that we, BENJAMIN SCHARDT and WILLIAM LUTZENBERGER, citizensof the United States, residing at Dayton, in the county of Montgomeryand State of Ohio,

have invented certain new and useful Improvements in Electric-LightSupports; and "we dohereby declare that the following is a full, clear,andexact description of the invention,'which will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the a ccompanying drawings, and to the letters of referencemarked thereon, which form a part I 5 of this specification.

Our invention relatesto improvements in electric-light supports, theseveral features of which will be fully hereinafter set forth} Thenature of our invention consists in a case or shield permanentlysuspended on a supporting-table, and in which is a spring and armactuated catchto attach and detach an .arc lamp and connective parts insaid case to make the requisite electric circuits for said are lamp, thesame being raised and lowered by means of a cord and'pulley.

The mechanism is illustrated in the accompanying drawings, in whichFigure 1 is a longitudinal central section of the arc-lamp support assuspended, with some of the interior parts shown in full and with theupper part of an arc lamp attached. Fig. 2 isa fragmentary view of thesame at a right angle to Fig. l, with a portion in sec tion on line a":and with some of the parts omitted. Fig. 3 is a top view of the case.Fig. 4 is a front view of an insulator-guide. Fig. 5 is a horizontalsection of the support on line .2, Fig..1.-- Like letters on the severalfigures designate like parts. v

A is a cast-iron case having lugs with concave surfaces on the top forbearings for the insulators o o, flanges at the bottom, the guide Dnearly central in the case, and orifices for the bolts, which formpivots for the pulley 2 and the catch 4. The insulators o o are attachedto the case by the straps u u, which are fastened to the case by screws.The supporting-cable w ispassed through the central orifices of saidinsulators, the ends of the cable being secured to posts on the oppositesides of a street, and thus the electric-light support is suspended. Thegrooved pulley 2 is supported near the top of the case, and over thispasses the cord 1, which is used to raise and lower the electric lamp.The connection-piece 17 consists of two like parts, which are united byscrews. The top is spherical and has longitudinal grooves to engage thecord. The lower end is likewise spherical, with a portion cut away, andwithin is a spherical 0rifice in which is held the head '7 of thesupporting-rod 9, thus forming a ball-and-socket joint, which will givethe requisite move-- ment when the lamp is swung by the wind. The rod 9has a spherical head beneath a hemispherical part, with face downward,to engage the catch 6. Below the center is a shoulder, against which theblock E is held by the forked nut 10. Within the ears of this nut is apin, on which is suspended an arc lamp, the eye 18 embracing the same.

The catchG is suspended in the case on pivot 8, and to said catch ispivoted the disengaging-arm 4c, and this arm is held to said catch bythe spiral spring 5. To the right of the case is attached the fiatspring 7, the use of which is to press the catch forward to en- 8c gagethe supporting-rod.

This completes the description of the parts which support the lamp, andthe operation is as follows: By pulling the cord the rounded connectionpart passes the rounded head of the catch, and as the hemispherical headof the supporting-rod passes the same is engaged by the catch, and thelamp is thereby suspended. To detach the lamp, the connection part israisediuntil the spherical head has passed the disengaging-arm 4:- Whenthis is done, the cord is loosened, the gravity of the lampcarryingdownward this arm. The same, engaging the guide D, carries thecatch outwardly, as shown by dotted lines, and thus 5 letting the lampbe lowered to the ground by the attendant. As a consequence, the catchis held back until the connection part carries up the disengaging-arm,and the same is held above the guide in its normal position by the I00spiral spring 5. To the flange of the case A is attached the shield B,of tinplate, circular in form and flaring at the bottom. Attached to theinner surface, as shown at Fig. 5, are four blocks of wood 0, which forminsulatorguides for the block E. The guide'O (shown in Figs. 1 and 4;)holds within agroove of the same the connective bar 8, which freelymoves therein. This bar tapers at its lower end to engage the springconnective plates 11, when the same is drawn down by its gravity'and theretractive spiral spring 18. On the front of the same is aprojection toengage the circular ring 14:. The flat spring 16 bears against the backof the same, and the other end of this spring is attached to thebinding-post to which the line-wire S is connected. The wooden block Eis held on the supporting-rod 9, and to its upper edge is attached thecircular metallic ring 14, and to its lower edge is attached a similarmetallic ring 15. The binding-post t of the lamp is connnected with theformer by a conductingwire which passes through an orifice in the block.The bin ding-post t of the lamp is connected to the latter by aconducting-wire. The binding-post of the line-wire S is connected by aconducting-wire to the spring connective plate 13, which bears againstthe metallic ring 15. To the insulator-guides 0, near their lower ends,is attached the circular wire 12, and this is electrically connected tothe line-wire S and to the spring connectives 11, attached to guide 0'.The connective bar 8 in its normal position connects with the springconnective plates 11, thus forming an electric circuit through thesupport, as follows: From main line S to circular wire 12, connectiveplates 11, connective bar 8, and spring connection -plate 16 tomain-line wire S. This is the electric circuit formed when the lamp isdetached, and as the lamp is being attached to the support the blockwith its ring 14 carries up the connective bar 8, thereby breaking thecircuit through the support and instantaneously establishing a circuitthrough the helices and carbon candles of the lamp. The course of thecircuit is from main line S, spring connective plate 13, circular plate15 of the block E, to lampbinding post 15, through the lamp tobinding-post .t, thence to circular plate 14:, connective bar 8, springconnective plate 16, and line-wire S to the dynamo, the source of thecurrent.

Having fully described our invention,what we claim,and desire to secureby Letters Patent, is-

1. In an electric-light support, the combination, with asupporting-frame, of a catch pivoted thereto, guide on said frame, anddisengaging-arm pivoted to said catch, arranged to be brought intocontact with said guide and thus to disengage the catch when the lamp islowered, substantially as shown and described.

2. In an electric-light support, the combination, with asupporting-frame, of a catchpivoted thereto, disengaging-arm pivoted tothe catch, guide opposite said arm, and lampsupporting rod to operatesaid arm and thus throw the catch, substantially as shown and described.

3. In an electric-light support, the combination, with asupporting-frame, of a catch pivoted thereto, guide on said frame, armpivoted to said catch arranged to be brought into contact with saidguide by the lampsupporting rod when lowered, and spring operating onsaid catch to bring it into engagement with the rod when the lamp israised, substantially as shown and described.

4. In an electric-light support, the combination, with asupporting-frame, of a catch pivoted thereto, guide D on said frame, armpivoted to said catch, with spring or lug thereon to support the arm,lamp-supporting rod with hemispherical portion to engage said catch andhaving a spherical head, and spring 7, to actuate said catch,substantially as shown and described.

5. The combination of the case A, with lugs on top thereof havingconcave surfaces, the binding straps n, insulators 'v v, and cable m, toretain in position an electric-light support, substantiallyas set forth.

6. In an electric-light support, the combination, with the shield B, ofinsulating-guides C, circular wire 12, attached thereto in electricalconnection with one line-wire, and sliding bar 8, in electricalconnection with the other line-wire and arranged to connect with thecircular wire when the lamp is removed, and thus to complete the circuitthrough the lamp-support, substantially as shown and described. k

7. In an electric-light support, the combination, with aninsulating-block carried on the lamp, of metallic rings thereoninsulated from each other, the one in electric connection with onecarbon of the lamp and with one line-wire when the lamp is raised, theother in electric connection with the other lamp-carbon, and the slidingbar 8, in

electric connection with the other line-wire, arranged to shift withsaid block as the lamp is raised, and thus to break the circuit throughthe support and'complete it through the lamp, substantially as and forthe purpose specified.

In testimony that we claim the foregoing as our own we aflix oursignatures in presence of two witnesses. I

Witnesses:

B. PICKERING, SUMNER T. SMITH.

